Use the custom DTH is available from the smartest house.
The Ecolink door sensor is only available on the US frequency, and is a popular choice.
Everspring has a similar model to the eco-link available in the UK. Try Vesternet for that one.
And new for 2020: Zooz has a very interesting zwave S2 module for the US with 3 dry contacts:
(Popp has announced a similar design for the EU only, the SA01, but well it has been certified I have not yet seen it for sale anywhere.)
New for 2021 for both the US and UK
Aeotec has now added dry contacts to the newest version of its open/close sensor, which is using the Z wave series 700 chip, so should have very good battery life and range for a Z wave device. available on either the North American or UK/EU frequency, so make sure you get the one that matches your hub.
Other kinds of input
On the other hand, if you mean to include devices that can handle an external probe, such as for temperature or moisture, there are several but they are very different from the ones with dry contacts.
The Fibaro. RGBW Controller can accept input from four different analog sensors, and is popular for greenhouse operations.
Or see their “universal Sensor,“ number four above.
There are other devices which can accept input from a single probe sensor, most commonly temperature. But before I start listing those, I wasn’t sure if that was what you were interested in.
Thanks for the post! I had the same issue sourcing the Aerotec one.
AHH I never thought this through - one thing i needed was for the sensor to be simply binary. i.e. if I put my output from my traditional motion sensor into a temperature dry contact sensor, it wouldn’t give me a 1 or a 0 it’d give me nonsense.
thanks @xdreamwalker! does it open up to have dry contact input? or did you have to hack the hardware in some way?
I’m in the UK but surprisingly they aren’t too expensive to import from an Amazon.com marketplace seller! over 4 x more than I pay for Xiaomi door sensors, but that’s not the point, they can potentially save me buying the more expensive dry contact bridges like the Mimolite
Hi @JDRoberts was wondering if you could help advise on something.
I got the Universal Sensor and i’m having a real struggle getting it’s output into SmartThings. It’s a fairly complex device for my needs, do you think i’d have a simpler task with the Fibaro Door Sensor? (it’s annoyingly £10 more but I’m willing to pay that for simplicity of configuration)
EDIT: I’ve just seen that the available Fibaro door sensor is now the v2, whereas all posts I can find on this forum are for the v1, do you have any idea if the v2 has dry contacts?